Respiratory System Discovery
Stations
1. The Lungs Inside/Outside
www.smm.org/heart/lungs/top.html
Outside Lungs
Inside Lungs
2. Exhale on a Mirror
1) What do you exhale?
What comes out of your body
each time you breathe out?
Be specific.
Carbon dioxide(CO2)
2) What did you observe when
you exhaled on the mirror?
We exhale carbon dioxide(CO2) and
water vapor(the fog on the mirror).
3. Bottle Lung Model
2)What does each of the part of the model represent?
Balloon = lung bottle = rib cage plastic = diaphragm
1 &3)Describe in detail what you
did to make the balloon inflate
and deflate.
• When the diaphragm(plastic)
moves down air goes into the
balloon
• When the diaphragm(plastic)
goes up the air goes out of the
balloon.
4. Microscope slide of lung
1) Draw what you see
2) Do you think there is a purpose to
all of the sacs and branches in the
lung? If so, what is the purpose?
Yes, they hold the gasses (oxygen,
water vapor, and carbon dioxide)
3) In order to function, does the
lung need a lot of sacs and
branches? What is your evidence?
Yes, I can see quite a few holes (air
sacs) in this slide which is a small
piece of lung.
5A. Micro viewer Slide of Lung section
1) Draw what you see
2) Do you think there is a purpose to
all of the sacs and branches in the
lung? If so, what is the purpose?
Yes, they hold the gasses (oxygen,
water vapor, and carbon dioxide)
3) In order to function, does the
lung need a lot of sacs and
branches? What is your evidence?
Yes, I can see quite a few holes (air
sacs) in this slide which is a small
piece of lung.
5B. Stereoscope of Lung
Notice the
holes = air
sacs in alveoli
in the lung
How does this compare with the cross section of the
lung that was observed under the microscope?
This is a 3 dimensional view, the microscope is a flat
view. You can see the air sacs in the lung tissue.
6. Lung Capacity
1)
2)
3)
Blow 1 breath into the balloon
Measure the circumference
Find your lung capacity (repeat)
1) Who was able to blow the most air
into their balloon?
2) What is it about the person that
enabled him/her to do this?
Is it size, gender, amount of
exercise, having asthma or a
combination of factors?